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(908)
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- Faculty Publications (253)
Show Results For
- All HBS Web
(908)
- People (2)
- News (218)
- Research (462)
- Events (3)
- Multimedia (12)
- Faculty Publications (253)
- July 2021
- Article
Medical Debt in the U.S., 2009–2020
By: Raymond Kluender, Neale Mahoney, Francis Wong and Wesley Yin
Importance: Medical debt is an increasing concern in the US, yet there is limited understanding of the amount and distribution of medical debt, and its association with health care policies.
Objective: To measure the amount of medical debt nationally and by... View Details
Objective: To measure the amount of medical debt nationally and by... View Details
Kluender, Raymond, Neale Mahoney, Francis Wong, and Wesley Yin. "Medical Debt in the U.S., 2009–2020." JAMA, the Journal of the American Medical Association 326, no. 3 (July 2021): 250–256.
- March 2022 (Revised January 2025)
- Technical Note
Linear Regression
This note provides an overview of linear regression for an introductory data science course. It begins with a discussion of correlation, and explains why correlation does not necessarily imply causation. The note then describes the method of least squares, and how to... View Details
Keywords: Data Science; Linear Regression; Mathematical Modeling; Mathematical Methods; Analytics and Data Science
Bojinov, Iavor I., Michael Parzen, and Paul Hamilton. "Linear Regression." Harvard Business School Technical Note 622-100, March 2022. (Revised January 2025.)
- 2011
- Article
The Causal Impact of Media in Financial Markets
By: Christopher Parsons and J. Engelberg
Disentangling the causal impact of media reporting from the impact of the events being reported is challenging. We solve this problem by comparing the behaviors of investors with access to different media coverage of the same information event. We use zip codes to... View Details
Parsons, Christopher, and J. Engelberg. "The Causal Impact of Media in Financial Markets." Journal of Finance 66, no. 1 (February 2011): 67–97.
- 2010
- Working Paper
Investment Taxation and Portfolio Performance
By: Daniel B. Bergstresser and Jeffrey Pontiff
Taxes have a first-order impact on portfolio returns. Most research mistakenly assumes that portfolios command similar tax burdens, or that tax burdens are proportional to dividend yields. Portfolio strategies differ in the pace of capital gains realization. We use the... View Details
Keywords: Financial Strategy; Investment Return; Investment Portfolio; Taxation; Performance Evaluation
Bergstresser, Daniel B., and Jeffrey Pontiff. "Investment Taxation and Portfolio Performance." Harvard Business School Working Paper, No. 10-084, March 2010.
- 2025
- Working Paper
Better Keep the Twenty Dollars: Incentivizing Innovation in Open Source
By: Annamaria Conti, Vansh Gupta, Jorge Guzman and Maria P. Roche
Open source is key to innovation yet is assumed to be done largely through intrinsic motivation. How can we incentivize it? In this paper, we examine the impact of a program providing monetary incentives to motivate innovators to contribute to open source. The Sponsors... View Details
Keywords: Open Source; Innovation; Incentives; Financial Rewards; Crowding Out; Open Source Distribution; Innovation and Invention; Motivation and Incentives; Technology Industry
Conti, Annamaria, Vansh Gupta, Jorge Guzman, and Maria P. Roche. "Better Keep the Twenty Dollars: Incentivizing Innovation in Open Source." Harvard Business School Working Paper, No. 24-014, September 2023. (Revised January 2025. NBER Working Paper Series, No. 31668, September 2023)
- March 2020 (Revised May 2020)
- Case
Redefining Mogul
By: Ethan C. Rouen
Tiffany Pham taught herself to code and created a technology platform, Mogul, with the goal of providing girls and women around the world with information and opportunities. After several years Mogul had reached more than 146 million women around the world and had... View Details
Keywords: Women; Inclusion; Technology; Branding; Social Impact; Entrepreneurship; Internet and the Web; Information; Knowledge Dissemination; Gender; Diversity; Brands and Branding; Expansion; Strategy; Media; Personal Development and Career; Technology Industry; Media and Broadcasting Industry; United States
Serafeim, George, Ethan Rouen, and Sarah Gazzaniga. "Redefining Mogul." Harvard Business School Case 120-043, March 2020. (Revised May 2020.)
- 2025
- Working Paper
Generative AI and the Nature of Work
By: Manuel Hoffmann, Sam Boysel, Frank Nagle, Sida Peng and Kevin Xu
Recent advances in artificial intelligence (AI) technology demonstrate a considerable potential
to complement human capital intensive activities. While an emerging literature documents wide-ranging
productivity effects of AI, relatively little attention has been paid... View Details
Keywords: Generative Ai; Digital Work; Open Source Software; Knowledge Economy; AI and Machine Learning; Open Source Distribution; Organizational Structure; Performance Productivity; Labor
Hoffmann, Manuel, Sam Boysel, Frank Nagle, Sida Peng, and Kevin Xu. "Generative AI and the Nature of Work." Harvard Business School Working Paper, No. 25-021, October 2024. (Revised April 2025.)
- September 2022
- Article
Trends in Remote Patient Monitoring Use in Traditional Medicare
By: Mitchell Tang, Carter Nakamoto, Ariel Dora Stern and Ateev Mehrotra
Remote patient monitoring (RPM), the collection by patients of physiological measurements that are automatically sent to their health care practitioners, has been touted as a promising tool for improving chronic disease management. Interest in RPM has grown because of... View Details
Tang, Mitchell, Carter Nakamoto, Ariel Dora Stern, and Ateev Mehrotra. "Trends in Remote Patient Monitoring Use in Traditional Medicare." JAMA Internal Medicine 182, no. 9 (September 2022): 1005–1006.
- 8 AM – 8 PM EDT, 26 Apr 2025
- Industry Events
Real Estate Symposium at Harvard 2025
The Real Estate Club, a student club at Harvard Business School, and the Harvard GSD Real Estate Club are excited to announce the Real Estate Symposium at Harvard 2025.
Join our diverse audience of over 500 attendees, including industry professionals, alumni,... View Details
- 2008
- Working Paper
Market Reaction to the Adoption of IFRS in Europe
By: Christopher S. Armstrong, Mary E. Barth, Alan D. Jagolinzer and Edward J. Riedl
This study examines the European stock market reaction to sixteen events associated with the adoption of International Financial Reporting Standards (IFRS) in Europe. European IFRS adoption represented a major milestone towards financial reporting convergence yet... View Details
Keywords: Financial Reporting; International Accounting; Financial Markets; Code Law; Standards; Adoption; Europe
Armstrong, Christopher S., Mary E. Barth, Alan D. Jagolinzer, and Edward J. Riedl. "Market Reaction to the Adoption of IFRS in Europe." Harvard Business School Working Paper, No. 09-032, September 2008.
- January 19, 2024
- Article
Value-Based Health Care Can Transform the Treatment of Patients with Substance Use Disorder
By: Robert S. Kaplan and Sarah E. Wakeman
U.S. overdose deaths currently exceed 100,000 per year. New facilities, known as bridge clinics, are broadening access to high-quality care by offering outpatient substance use disorder (SUD) treatment with few access barriers. But many of the critical services offered... View Details
Kaplan, Robert S., and Sarah E. Wakeman. "Value-Based Health Care Can Transform the Treatment of Patients with Substance Use Disorder." Health Affairs Forefront (January 19, 2024).
- August 2021 (Revised February 2024)
- Case
Data Science at the Warriors
By: Iavor I. Bojinov and Michael Parzen
The case explores the development and early growth of a data science team at the Golden State Warriors, an NBA team based in San Francisco. The case begins by explaining the initial rationale for investing in data science, then covers a debate on the appropriate team... View Details
Keywords: Data Science; Digital Marketing; Analysis; Forecasting and Prediction; Technological Innovation; Information Technology; Sports Industry; San Francisco; United States
Bojinov, Iavor I., and Michael Parzen. "Data Science at the Warriors." Harvard Business School Case 622-048, August 2021. (Revised February 2024.)
- 2025
- Working Paper
Tracking the Short-Run Price Impact of U.S. Tariffs
By: Alberto Cavallo, Paola Llamas and Franco Vazquez
This paper examines the short-run impact of the 2025 U.S. tariffs on consumer prices using a unique integration of high-frequency retail pricing data, product-level country-of-origin information, and detailed tariff classifications. By linking daily prices from major... View Details
Cavallo, Alberto, Paola Llamas, and Franco Vazquez. "Tracking the Short-Run Price Impact of U.S. Tariffs." Working Paper, April 2025.
- March 2000 (Revised January 2001)
- Case
Microsoft's Vega Project: Developing People and Products
By: Christopher A. Bartlett and Meg Wozny
With a focus on Matt MacLellan and his careful development as a project manager under his boss and mentor, Jim Kaplan, the case describes the evolution of Microsoft's human-resource philosophies and policies and illustrates how they work in practice to provide the... View Details
Keywords: Human Resources; Competitive Advantage; Retention; Personal Development and Career; Organizational Design; Information Technology; Motivation and Incentives; Leadership Development
Bartlett, Christopher A., and Meg Wozny. "Microsoft's Vega Project: Developing People and Products." Harvard Business School Case 300-004, March 2000. (Revised January 2001.)
- December 2017 (Revised January 2019)
- Case
In the Eye of a Geopolitical Storm: South Korea's Lotte Group, China and the U.S. THAAD Missile Defense System (A)
By: Andy Zelleke and Brian Tilley
By late 2016 and early 2017, Lotte Group, a South Korean chaebol (large family-controlled business group) had become embroiled not only in the domestic political turmoil surrounding President Park Geun-hye, but also—uncomfortably—in a four-country geopolitical storm. ... View Details
- 2017
- Working Paper
Exploring the Relationship between Architecture Coupling and Software Vulnerabilities: A Google Chrome Case
By: Robert Lagerstrom, Carliss Y. Baldwin, Alan MacCormack, Dan Sturtevant and Lee Doolan
Employing software metrics, such as size and complexity, for predicting defects has been given a lot of attention over the years and has proven very useful. However, the few studies looking at software architecture and vulnerabilities are limited in scope and findings.... View Details
Keywords: Software; Architecture; Coupling; Vulnerabilities; Applications and Software; Complexity; Measurement and Metrics
Lagerstrom, Robert, Carliss Y. Baldwin, Alan MacCormack, Dan Sturtevant, and Lee Doolan. "Exploring the Relationship between Architecture Coupling and Software Vulnerabilities: A Google Chrome Case." Harvard Business School Working Paper, No. 17-078, February 2017.
- May 2018
- Article
Nowcasting Gentrification: Using Yelp Data to Quantify Neighborhood Change
By: Edward L. Glaeser, Hyunjin Kim and Michael Luca
Data from digital platforms have the potential to improve our understanding of gentrification and enable new measures of how neighborhoods change in close to real time. Combining data on businesses from Yelp with data on gentrification from the Census, Federal Housing... View Details
Keywords: Forecasting Models; Simulation Methods; Regional Economic Activity: Growth, Development, Environmental Issues, And Changes; Geographic Location; Local Range; Transition; Analytics and Data Science; Measurement and Metrics; Economic Growth; Forecasting and Prediction
Glaeser, Edward L., Hyunjin Kim, and Michael Luca. "Nowcasting Gentrification: Using Yelp Data to Quantify Neighborhood Change." AEA Papers and Proceedings 108 (May 2018): 77–82.
Tracking the Short-Run Price Impact of U.S. Tariffs
This paper examines the short-run impact of the 2025 U.S. tariffs on consumer prices using a unique integration of high-frequency retail pricing data, product-level country-of-origin information, and detailed tariff classifications. By linking daily prices from major... View Details
- 2025
- Working Paper
Using Satellites and Phones to Evaluate and Promote Agricultural Technology Adoption: Evidence from Smallholder Farms in India
By: Shawn Cole, Grady Killeen, Tomoko Harigaya and Aparna Krishna
This paper evaluates a low-cost, customized soil nutrient management advisory service in India. As a methodological contribution, we examine whether and in which settings satellite measurements may be effective at estimating both agricultural yields and treatment... View Details
Keywords: Performance Evaluation; Technology Adoption; Measurement and Metrics; Analytics and Data Science; Agriculture and Agribusiness Industry; India
Cole, Shawn, Grady Killeen, Tomoko Harigaya, and Aparna Krishna. "Using Satellites and Phones to Evaluate and Promote Agricultural Technology Adoption: Evidence from Smallholder Farms in India." Harvard Business School Working Paper, No. 25-035, January 2025.
- April 2014
- Article
The Emergence of 'Us and Them' in 80 Lines of Code: Modeling Group Genesis in Homogeneous Populations
By: Kurt Gray, David G. Rand, Eyal Ert, Kevin Lewis, Steve Hershman and Michael I. Norton
Psychological explanations of group genesis often require population heterogeneity in identity or other characteristics, whether deep (e.g., religion) or superficial (e.g., eye color). We use game-theoretical agent-based models to explore group genesis in homogeneous... View Details
Keywords: Groups and Teams
Gray, Kurt, David G. Rand, Eyal Ert, Kevin Lewis, Steve Hershman, and Michael I. Norton. "The Emergence of 'Us and Them' in 80 Lines of Code: Modeling Group Genesis in Homogeneous Populations." Psychological Science 25, no. 4 (April 2014): 982–990.